Metering device.



H. GHRISMAN.

METERING DEVICE.

APPLICATION'HLED .11111.21,1913.

Patented Dec. 1, 1914 3 SHEETS-SHEET 1 IN ENTOR. MAW

WITNESSES TTORNEYS.

H. CHRISMAN. METERlNG DEVICE. APPLICATION P1LBDJAN-21, 1913.

.Eate'nted Dec. 1, 1914.

(i SHEETS-SHEET 2.

NVENTOR. /M BY TTORN YS H. CHRISMAN.

METERING DEVICE. APPLICATIONPILBDJA11-21,1013.

1,1 18,922. Patend 116011914,

3 SHEETS-SHEET 3.

WITNESSES INVENTOR /MMW @wg/M W@ UNITED STATES PATENT OFFICE.

HORACE CHRISMAN, 0F EDGEWOOD PARK, PENNSYLVANIA, ASSIGNOR TO PITTSBURG' METER COMPANY, OF EAST PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

Specification. of Letters Patent.

METERING DEVICE.

' Patented Dec. 1, 1914.

Application led January 21, 1913. Serial No. 748,847.

T0 aZZ whom 'it may concern.'

Be it known that I, HORACE CHRISMAN, a citizen of the United States, residing at Edgewood Park, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Metering Devices, of which the following is a specication.

My invention has relation to metering devices for measuring fluid flows through conduits and particularly to that type of metering apparatus used in water mains wherein two meters are employed, namely, a normal flow meter` for measuring normal Hows and a tally or proportional meter for measuring abnormal flows, such as occur for example intimes of tire service. One of the chief objects of my invention is the provision of improved means for rendering the normal ow meter inoperative under heavy flow conditions when the tally meter is in operation, and for rendering the tally meter inoperative when the normal flow meter is operative.

My invention also contemplates the provision in a proportional metering devlce of improved means whereby the volumepassing through the proportional meter w1ll always be in a substantially constant proportion to the volume passing through the main. A further objectv of the invention resides in the provision of improved means for maintaining a differential in the pressure 1n the apparatus whereby the normal fiow meter, which isof the movabletype, wlll remain on its seat in the path of the flow during all normal flows.

A specific feature of the invention resides in the provision of means -actuated by movement of the movable normal How meter for controlling the volume of water passing through the proportional or tally meter whereby said volume will automatically be i Fig 3 is a plan view of the device of Fig. 1 wlth the cover plate of the casing removed and the normal flow meter broken away.

The metering apparatus is mounted in the .usual casing 3 which is provided with an inlet opening or port 4:, an outlet port 5, the caslng being placed in a main so that the ports are in the line of flow through the main. Mounted with the casing' adjacent the inlet port 4 is a removable sleeve 6 which may be fastened in any suitable manner and which is provided at its inner valve seat 7 having in its face an annular recess 8, the purpose of which will hereinafter appear.

Hinged to the sleeve G adjacent the inner end of the same on brackets 6"L is a combined check valve and normal flow meter A which comprises a disk 9 to which is secured a meter 10 which may be of any preferred type, the one illustrated being of the wabble disk type. The disk 9 is provided with a renewable face l1 which takes against the valve seat 7 as indicated in Fig. 1. In substantially the central portion of the disk I provide a port or passage 12 adjacent the edges of which is an annulus or flange 13 having a valve seat 14. The port l2 communicates at one end with the inlet port 15 ofthe meter 10 and at the other end with the interior of the sleeve 6, the latter end of the port being controlled by the disk 16 which is pivoted to the flange 13 as at 17 and which when the swinging meter is raised is held in closed position by means of the spring 18 (see Fig. 2). lVhen the meter l0 swings downwardly to close the passage between the ports 4 and 5, the nose 19 on the disk 16 abuts the sleeve 6 and uncovers the port 12. The usual indicator 20 is provided on the exterior of the casing and is operated from the meter disk by the usual gearing 2l.. It will be understood that the swinging meter normall)7 tends to seat itself by the action of gravity.

In order that the meter shall remain securely seated during all normal flows through the casing, I provide a diiferential of pressure on the faces of the disk 9. I accomplish this by establishing communication between the recess 8 in the valve seat 7 and the atmosphere by means of the port 22 and the hollow stem 23 which is mounted in the casing at a point adjacent the valve seat. It will be clear that when the parts end with a sloping K are in the position indicated in Fig. 1 the recess 8 should be in communication with the atmosphere so that the pressure therein may be less than that within the casing, but that when the parts are in the position indicated in Fig. 2, communication to the atmosphere should be out off to prevent wasting of the water. Provision for this is made through the valve 24 which controls the port 22. The valve is carried on and operated by the curved arm 25., which lies in the recess 8 and is pivoted to the yvalve seat as indicated at A26. The valve 24: is held in closed position by means of the spring 27 which tends to force-the upper end of the arm outwardly, asseenn Fig. 2. By this construction the port 22 is open when the swinging meter 'is ,seated and closed when the meter is in inoperative position, thus establishing and cutting off communication with the atmosphere automatically at the proper times.

Referring nowv to the proportional'metering apparatus `for measuring heavy or abnormal Hows through the main, it lwill be seen that .the upper portion of the -sleeve casting 6 has a Hanged portion 28'in which is mounted a proportional meter 29l such manner that its inlet opening'communicates with the interior of the sleeve. The pro- -portional meter may be of any preferred order that indicatin type. The outlet of this meter communicates with a port 30 Aformed inthe sleeve casting and opening in the face of the valve seat 7 When the normal How meter is seated, the port 30 will of course be closed, .and when the How through the main is suHicient to unseat the normal How meter the port will be uncoveredand water will pass through the proportional meter and the port 30. An indicating device 3l is operated from the meter bythe usual gearing l32. AIn

device 31 shall accurately register the ow through the main on any desired proportional basis, I provide a means for controlling thervolume of water passing through the proportional meter and port 30,l said means comprising a valve member 33 which is substantially pyramidal in shape and which is Vsecured to the disk 9 by means ofthe stud 34. The valve member 33 is adapted to project within and close the port 30 when the normal How meter is seated and the port opening is more o r less restricted, depending on the angular position assumed by the normal How meter, the `shape of the valve member 33 being such that the volume permitted to pass through the port 30 will always be in a predetermined substantially constant' proportion to the volume passing through the main. When the main passage is completely uncovered by the normal How meter, the port 30 is substantially unrestricted.

Briefly stated the operation of the entire,

8 and the atmosphere; and the port 30 yis closed by the valve member 3.3. In this position of the parts there 'is no How through the proportional meter and the How through the main passes through the port-12Mand l the normal How meter and out through the outlet 5. The indicator 20 registers the amount of the How,

Whenthe How is heavy, as in time V,of Hre service, the normal How meter is swung from its seat; the valve port 12 is immediately closed by the disk 16, thereby rendering the normal How meter inoperative; the port 22 vis closed by the valve 24; and the valve member 33 uncoversfthe port 30, thereby placing the proportional meter in operation, the indicator 31 registering the How.

From the fore oing itl will be apparent that the proportional How meter is eH'ectually rendered inoperative during all normal Hows within the capacity of the normal How meter, and that the normal How meter is rendered inoperative automatically upon the occurrence of abnormal Hows, duringwhich theproportional meter is operative. It will also be seen that regardlessof the 'volume passing through the main passage,

the` quantity passing through the tally meter-is automatically maintained in direct proportion thereto.

An ladvantage incident to havin both the .normal How meter and the ta ly meterl mounted on the sleeve is that the entire metering device can be assembled and then inserted bodily into the casing, or can be removed therefrom bodily. The construction also enables .me to remove 4either of Vthe meters singly without necessarily disturbing the rest of the apparatus. In removing the normal How meter, the plates Gbare taken 0H, and in removing the tally meter, the screws 29EL are taken'out.

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters -Patent is the following:

1. 'A metering device comprisingv in combination a main, a casing in the main, a bodily movable meter in the casing for measuring normal Hows, a proportional meter, and means actuated b the normal How meter in its movement or automatically proportioning the How through the proportional meter to the How through the main.

2. A metering device comprising in combination a main, a casing 1n the main, a bodily movable meter in the casing for measuring normal Hows, a proportional meter, and a valvular device actuated by the normal flow meter in its movement for automatically proportioning the flow through the proportional meter to the liow through x the main.

3. A metering device comprising in combination a main, a casing 1n the main, a bodily movable meter in the casing for measuring normal fiows, a proportional meter, and a valvular device carried by the movable meter in its movement and adapted to automatically proportion the flow through the proportional meter to the ow through the main.

4f. A metering device comprising in combination a main, a casing in the main, a norf mal flow meter, a proportional meter, one of said meters bein 'bodily movable, and means for automatical y proportioning the flow through the proportional meter, said means being actuated on movement of the movable meter.

5. A metering device comprising in combination a main, a casing in the main,- a swinging normal ow meter, a proportional meter, the casing being provided with a port in communication vwlth said proportional meter, and a valvular device carried by the normal low meter for controlling said port.

v6. A metering device comprising in combination a main, a casing in the main, a swinging normal lflow meter, a proportional meter, the casing being provided with a port in communication wlth said proportional meter, and a tapering valve member carried on thenormal How meter for controlling said port and automatically proportioning the flow through the proportional Ameter to the flow in the main.

7. A device of the class described comprising a main, a casing in the main, ajseat 1n said casing, a bodily movable member adapted to take against said seat, a recessed portion in'said seat in communication with the atmosphere whereby al differential of pressure within the casing is provided, and a valve cutting off communication with the atmosphere, said valve being opened by the movable member when the latter seats.

8. A device of the class described comprising a main, a casing in the main, a seat in said casing, a bodily movable member adapted to take against said-seat, a recessed portion in said seat in communication with the atmosphere whereby a differential of pressure within the casing is provided, and a spring-held valve cutting olf communication with the atmosphere, said valve being opened by the movable member when the latter seats.

9. A metering device comprising in combination a main, a casing 1n the main, a swinging meter in the casing movable into and out of the line of flow and having a valve disk, a seat for the disk, a neck on said disk, provided with a port for establishing a direct. path of flow to the meter, a valve closing said port and an abutment on the valve adapted to take against the casing and open the valve when the swinging meter seats.

10. A metering device comprising in combination a main, a casing inthe main, a

.swinging meter in the casing movable into and out of the line of flow and having a valve disk, a seat for the disk, the disk being provided with a port therein for establishing a direct path of flow to the meter, a valve closing said port, and an abutment on the valve adapted to take against the casing and open the valve when the meter seats.

11. A metering device comprising in combination, a casing and a sleeve therein car- Irying a normal flow meter and a tally meter, whereby the said normal flow meter and tally meter may be removed by removal of the sleeve.

In testimony whereof I have hereunto signed my name in the presence of the two .subscribed witnesses.

. n HORACE CHRISMAN.

Witnesses:

LETrrIA A. MYERS,

AncHwoRrn MARTIN. 

